Mechanism for actuating electrical switches.



B. D. HBJUON.

MEUHANISM FOR. AGTTING ELEGTRCL SWITCHES,

' MPLXGATION Mmm 001223, m11.

1 1322,62@ at'ne. p11 MNM.

3 SHEETTSHEBT B J). HORTON.

MBGHANISM Pon AGTUATING ELECTRIOAL swiToHEs.

Anmonxon FILED 001.23, 1911.

Patented Apr. 9, 1912. l

3 BHEETS-BHBET 2.

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BRYSN IL HGB/TON, 0F DETROIT, MIUHIG'A FACTUIRUCG- COMPANY, OF DETROIT, MICH in man @uw mu l hm@ r Roi-31 n, gwch um if. desir Home@ fm' cwsed 1' be heid 1n f man JL hw." huid.,

hw in I. ,SSXGN rAN, A GORI?) aly against the influence of m @matic opm-r means. Ii

wn, im V of the stm-ting Cased durim 'Ulwung o" the Starting ,pwd for m "ng/rm and State of,

particulary ing a, pint o iw. i

three insulation spreaders 21, upon each of which spreaders there is mounted a pair of jaws 22, 23, for receiving a fuse and downwardly-directed blades 24, 25, for closing the circuit with. the switclrjaws l2 and 13 respectively. rlhe frame 20 is guided in its reciprocations toward and from the porcelain bases 9, by rods 26, which are securely fastened to the cover of the housinfr. The rods are shown connected at their iiee ends hy a :volte 27, to insure their rigidity. There are shown mounted in the frame 20, a pair of downwardly-'directed arms 28, each ot which is provided with a lug 29, adapted to enter a recess in the standard 3G, if an attempt is made to open the cover of the housing while the main or running switch is in its closed position. A sprin hinge is illustrated for causing the running switch to remain in either its open or its closed. position and for assisting it in assuming the full extent of its movement in either direction.- This spring hinge comprises a pair of hinge-plates 3l, each of which has an end seated in a recess 31, oit' the arm 28, where this joins the frame 20. The outer ends of the hinge-plates are seated in the ends of a C-spring 32, which is secured to the cover if the housing. The housing is shown pro- `vided with a pair of downwardly-directed plates 33, disposed short dista-ucc apart for making a scat for the central portion of the spring 32. The spring is shown held against this seat by means of suitable screws 34, which pass, in the present instance, through lugs 35 on the cover. vThis form ot spring seat, rather than a solidlug cast in the top ot the cover, eifects a saving in weight and also is for the purpose of permitting the casting to cool readily and evenly,.'\vhich would not be the case were this cast in one solid piece. Itwill readily be seen that upon the inauguration of the mo Jement of the running switch and after it has passed its medial position, the spring hinge .will `torce it to the iuli extent of its ran e of movement. 'lhe spring hinge will also return this switch to the end of its path of movement if it is moved a slight distance away from this position.

The blades 24, 25, extend upw rdly above the spreaders 2l, in blades 36, 87, which blades, when the running switch is closed, will be in circuit with the line. These blades form, with the parts which carry them, the base, as it were, of the starting switch, in the same manner as do the jaws and 13 and their supporting porcelains constitute the base of the running switch. The frame 3S of the starting or auxiliary' switch is mounted for reciprocat-ion upon the guide-bars 26, and is normally held in its upward or open position by means ci a pair ot extension springs 39, which are fastened to the top of the housing and to downwardly-ei-ftending hooks 40, secured to the frame 38. Three insulation spreaders 41 are shown mounted upon the frame 38, and each of which is provided with a pair of switch-jaws 42, 43, for respectively engaging with the switch-blades 36', 37. Each pair of switch-jaws 42, 43, is connected by means of an electrical `conductor 44, of suflicient .carrying capacity to accommodate the starting load or overload of the electrical apparatus with which the device is intended to coperate. The fuses in the main or running switch will have suicient carrying capacity to accommodate the normal running load of the electrical apparatus. The normal idle position of the two switches is that illustrated in Figs. l, 2, and 5. In this position it will be noticed that the starting switch is in circuit with the main or running switch and'that the conductor 44. therein parallels the fuse of the running switch. lVhcn it is desired to start the -motor or other apparatus with which the starter is in circuit, the two switches closed together will be moved unison toward the main base, and the blades 24, 25, will be caused to engage the jaws 12 and 13. This will place the fuse ofthe running switch in circuitwith the line and at the same time will place the conductor 44 in circuit with the line, paralleling the fuse. The starting overload will then traverse the conductor 44 wit-hout blowin out the fuse of the running switch.

lhe mechanism herein illustrated for actuating the switches comprises the rockshaft 1T, with its actuating handle 16 above referred to. This shaft 1T is housed within the housing of the switch. The shaft has fast upon it a pair of arms 45, which are located in such position that they will engage the under side of the frame 2O of the running switch, that is, the side which is directed toward the main bases t). For the purpose of moving the running switch from its open to its closed position, the rock-shaft has loose upon it a pair ot arms 46, which engage the upper or outer side of the frame 38 ofthe starting switch for the puri ;o'-"x ot moving this switch and the running to the closed position of both switches. y

loir H', of the arms 4261's shown provided withtau engaging portion/4T, which is seated hctween a pair of engaging blades 4S, 49, carried by the framework 3S. Movement is imparted to the arms 46 by means or' engaging abutments 50, carried by the tast arms 45, which abutments 50, engage suitahly formed abutmeuts 5l, on the loose arms 4G. These inter-engaging abutments are so positioned and timed that the arms 45 will have an amount ot' overthrow past the closed position of the running switch and the arms 46 will he free -from the actuating abutments upon arriving at the open position of the starting switch, the abutment 50 for engage 130 l over- 'f Starts wiil. noi'imlly e in "iig,v 5, which ie two ewitogie. n oir- U'pon. 'fig the be ifoezltl7 which "will i ino-re its nbntinent ngoge the abutment time .arri fifi und lil bien iviii permit Y emitting switch einge?) f etosefi ne of the i, enti enintl bring with the erm .inderside o'l h. Vlien n "i cnt 'ofi i rocked 'from Lion, which Willi running; Switch the f1: p rin convenience mitico-e illustrated in metter meingivili Loentrd in e.

ii Y

.torni invention is mlnriy fic ribed, yet it ener-'fee may be merio le @ienne Without de feriti i u ntion, claim: or :irtneting electricni ion with Compound j :in urn'i feet f-side of one naming oven Q, .tor engaging the switch. nach: Mirow' loose if/'inerenpon remembered lehaft and timed for actuating the outer portion o [the other switch member, an i abut-ment 'on thel shaft for engaging euch` arm and timed for permitting overthrow'of 'the sliait after such switch member* hee' reached the limit of its movement.

2. yIna, device of the character specified, 'the combination with a switch'embodyingnk l running switch and a startin switeh mov able severally and in unisom o a rock-shaft, un arm fast with the rook-,shaft sind4 eng`ag-l ing the' under Side of therunning switc arm loose upon the rock-shaft and eng `ngk the upper side ofythe stai'tin swit'c v abutment carried by the rook-liiftfoi en'- gnging the' free erm end 'timed for permit-ff ting overthrow of the fast .arm past elosed position of the runnin for permitting overthrow 'ofte shaft past the o en position ofthe starting switch.' f-

he combination with a main switch.y part movable tof; Werd ind fromvthe base', of. 'anfguxilieryf a base carredbythey. mainswitoliand a part f suchbase,- 'andai fast arm orengaging comprising n bese and a switch comprisin movable part-of t e iiiovable toward and from rook-sheft having a switch* and l 'the b'useward portion ofthe movable part t of the main Switch und ai4 arm vfor engaging the outer portion of the movable nrt of ,the auxileryswitchf'the free arm oeing provided with an' abutment face and the shaft being provided `with an abutment` fece for engaging the samefor moving the free arm toward the baee` of the mein switch.k

4t. The combintion with o running switch embodying n fuse for carrying therunning load, of e. 'starting switch embodying a oonductor for carrying the startingA loodz a rock-shaft, u pair of arms thereon having' Ie1ig'ngerrient with the startin switch' for closing the same, and a pair-o arme' on the roclvsheft for opening the'running snvitclnhl 5. The combination with embodying a fuse for carrying the running load, of a starting 'duetor for carrying p rock-shaft, and arms carried by lthe rooiein predetermined sequence.

my hand in the presence of two .subscribing switch embodying a con.- f

the starting load, n

evvitchee.- l l e F1105. In witness whereof I have. hereunto set' e' running switch i loro 

